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it is verry hard

Answer:

Step-by-step explanation:

meow goofy kid

By applying online survey method concept, it can be concluded that the company is using reward in the form of a $2.00 payment and an incentive by telling the readers that his or her input will make a difference (option D).

Online survey is a common survey method used by companies to gather data from a sample of the population.

Response rate is defined by the percentage of persons asked to answer a survey who actually answer the survey.

The company is using an online survey to allow them to reach a larger sample of people and gather data more efficiently.

However, by offering a small reward in the form of the $2.00 payment and an incentive by telling the readers that his or her input will make a difference, the company is hoping to increase the response rate and get more accurate results from the survey.  (option D)

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Full question:

Suppose you are reading an article online when the following text appeared in a popup window:

"Would you be interested in participating in a short health-related survey? If you qualify and complete this survey, you will receive $2.00".

What tactic is being used to increase the response rate for this survey? A. The company is selecting people randomly.

B. The company is using an online survey.

C. The company is using callbacks.

D. The company is using a reward in the form of the $2.00 payment and an incentive by telling the readers that his or her input will make a difference

The shapes is the base of a cone is Circle.

A circle is often referred to as the locus of points drawn equidistant from the centre. The radius of a circle is the distance between its centre and its outer line. The diameter of a circle is the line that divides it into two equal sections and is equal to twice the radius.

A circle is a fundamental 2D form that is measured by its radius.

We have a Cone.

A Cone if compared as two dimensional then a cone have have Triangular shape.

and, the base of cone have a circular shape.

Thus, the shape of base of cone is Circle.

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Answer:

wheres the pic tho

Step-by-step explanation:

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Answer:

The wire required to fence is 530 m.

Step-by-step explanation:

Length, L = 180 m

Width, W = 85 m

The perimeter of the wire is

P = 2 (L + W)

P = 2 (180 + 85)

P =  530 m

So, the wire required to fence is 530 m.

Answer:

Depends how much each box costs

Step-by-step explanation:

Anyways just divide 26 by the cost of the boxes

Ex: The boxes cost 2$

26/2=13

So 13 boxes if they cost two dollars

The probability that a family with 4 children has no more than 3 boys is 15/16.

To find the probability that a family with 4 children has no more than 3 boys, we can use the binomial distribution.

The binomial distribution is used to calculate the probability of obtaining a certain number of successes (boys in this case) in a fixed number of trials (children in this case), where each trial has only two possible outcomes (boy or girl) and the trials are independent.

Let X be the number of boys in the family. We want to find P(X ≤ 3), which is the probability of having no more than 3 boys. Since the probability of having a boy is 1/2 and the trials are independent, we can use the binomial distribution formula:

P(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)

= (1/2)⁴ + 4(1/2)⁴ + 6(1/2)⁴ + 4(1/2)⁴

= 15/16

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Step-by-step explanation:

3 to 8= 5

8 to 17= 9

17 to 30= 13

30 to 47= 17

47 to 68= 21

68 to 93= 25

93 to 122= 29

122 to 155= 33

155 to 192= 37

difference is 4

solve by

\(2 {n}^{2} - n + 2 \\ 2 {(9)}^{2} - 9 + 2 \\ 2(81) - 9 + 2 \\ 162 - 9 + 2 \\ 153 + 2 = 155\)

there is evidence to support your belief that the mean entry level salary for Registered nurses is higher than $65,000.

To test your belief that the mean entry level  salary for Registered nurses in the hospital is higher than $65,000, we can conduct a one-sample t-test.

The null hypothesis, denoted as H0, assumes that the mean entry level salary for Registered nurses is equal to or less than $65,000: μ ≤ $65,000. The alternative hypothesis, denoted as Ha, assumes that the mean entry level salary for Registered nurses is higher than $65,000: μ > $65,000.

We would collect a sample of entry level salaries of Registered nurses at the hospital and calculate the sample mean, denoted as x. Then, using the sample standard deviation, denoted as s, and the sample size, denoted as n, we can calculate the t-value using the formula:

t = (x - μ) / (s / √n)

We would compare the calculated t-value to the critical value from the t-distribution at the desired significance level. If the calculated t-value is greater than the critical value, we reject the null hypothesis and conclude that there is evidence to support your belief that the mean entry level salary for Registered nurses is higher than $65,000.

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Answer:

m∠D = 49°
m∠E = 41°
m∠F = 90°

Step-by-step explanation:

        We know a triangle's angles add up to 180, so we can create an equation and solve for x. We also know the little box represents 90 degrees.

Given:

        90° + 5x° + 14° + 3x° + 20° = 180°

Combine like terms:

        8x° + 124° = 180°

Subtract 124 from both sides of the equation:

        8x° = 56°

Divide both sides of the equation by 8:

        x = 7

        Now, we will plug this value of x back into the angles to solve. Again, the little box represents that Angle F is equal to 90 degrees.

m∠D = 5x° + 14° = 5(7)° + 14° = 49°
m∠E = 3x° + 20° = 3(7)° + 20° = 41°
m∠F = 90°

Answer: 2x= 40 so 2x20=40

Step-by-step explanation:every triangle has to add up to 180 digrees

65+75+40=180

The probability that the coin is a biased coin after one flip that results in tails is about 10.9%.

Bayes' theorem is a mathematical formula that helps us update our beliefs about the probability of an event occurring based on new information or evidence. It involves the prior probability, which is our initial belief about the probability of an event, and the likelihood of the evidence given that the event has occurred. By combining these two pieces of information, Bayes' theorem allows us to calculate the updated or posterior probability of the event occurring.

After one flip that results in tails, the probability that the coin is a biased coin can be found using Bayes' theorem:

P(biased coin | tails) = P(tails | biased coin) * P(biased coin) / P(tails)

P(tails | biased coin) = 3/5 (given)

P(biased coin) = 0.1 (given)

P(tails) = P(tails | fair coin) * P(fair coin) + P(tails | biased coin) * P(biased coin)

= 1/2 * 0.9 + 3/5 * 0.1

= 0.55

Therefore,

P(biased coin | tails) = (3/5 * 0.1) / 0.55

= 0.109 (approximately)

Thus, the probability that the coin is a biased coin after one flip that results in tails is about 10.9%.

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Assume that 90% of the coins in circulation are fair, and the remaining 10% are biased coins that give tails with probability 3/5. i hold a randomly chosen coin and begin to flip it.

(a) after one flip that results in tails, what is the probability that the coin i hold is a biased coin? after two flips that both give tails? after n flips that all come out tails?

There are 31 bags of  \($\frac{1}{3}\) pound bags of trail mix he can make.

As per the data given:
Diego is making a trail mix for him and his friends to take with them on a hike next week.

He mixes \($4\frac{2}{6}\) pounds of nuts, \($3\frac{3}{6}\) pounds of raisins, and \($2\frac{3}{6}\) pounds of chocolate chips.

Here we have to determine how many \($\frac{1}{3}\) pound bags of trail mix can he make.

First, we have to convert all the mixed fractions to improper fractions.

\($4\frac{2}{6} = \frac{26}{6}\)

\($3\frac{3}{6} = \frac{21}{6}\)

\($2\frac{3}{6} = \frac{15}{6}\)

The total number of pounds he mixed with nuts, peanuts, and chocolate chips.

Add up all the improper fractions.

\($=\frac{26}{6}+ \frac{21}{6} +\frac{15}{6}\)

As all the denominators have the same value we can add all the fractions directly.

\($=\frac{26+21+15}{6}\)

\($=\frac{63}{6}\)

\($=\frac{31}{3}\)

To see how many \($\frac{1}{3}\) bag he can have, we have to divide the total by \($\frac{1}{3}\).

So we have:

\($=\frac{\frac{31}{3} }{\frac{1}{3} }\)

= 31

Therefore the answer is 31.

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The volume of the cylnder is  9,728.5 ft³

For a cylinder of radius R and height H, the volume is given by:

V = pi*R^2*H

Where pi = 3.14

Here we know that the height is.

H = (20 + 1/2) ft = 20.5 ft

And the diameter is (1 + 1/5) times the height, then:

D = (1 + 1/5)*(20 + 1/2) ft = (1.2)*(20.5)ft = 24.6ft

And the radius is half of that, so:

R = 12.3ft

Then the volume is:

V = 3.14*(12.3ft)^2*20.5ft = 9,728.5 ft³

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Answer:

Step-by-step explanation:

2(80*3)+2(3*200)+2(80*200)=33680cm

Answer:

Step-by-step explanation:

1/2

============================================================

Explanation:

x = number of boys

The ratio of girls to boys is 4:1, meaning there are 4 times as many girls compared to boys. For example, the concert may have 40 girls and 10 boys.

For now, x is some unknown positive whole number. But we can say that 4x represents the number of girls, as we multiply by 4.

----------

We're told there are 75 more girls than boys, so,

number of girls = (number of boys) + 75

4x = x + 75

4x-x = 75

3x = 75

x = 75/3

x = 25

There are 25 boys and 4x = 4*25 = 100 girls.

We can see that 100-25 = 75 to show that there are 75 more girls compared to boys.

And also, the ratio 100:25 reduces fully to 4:1 after dividing both parts by the GCF 25. These two facts fully confirm the answers.

Three consecutive odd integers are -3, -1, and 1.

A detailed explanation of the answer.

To find 3 consecutive odd integers such that 3 times the sum of the first and second equals 13 less than the third, we can follow these steps:

Therefore, the three consecutive odd integers are -3, -1, and 1.

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Using expression 2x - 1,876.23 = 1,692.45, each of Ivy's paychecks is approximately $1,784.34.

What exactly are expressions?

In mathematics, an expression is a combination of symbols and/or numbers that represents a value or a set of values. Expressions can contain variables, constants, operations, and functions, and can be combined using mathematical operators such as addition, subtraction, multiplication, division, and exponentiation.

Now,

Let's assume that Ivy's paychecks are of equal amounts, and each paycheck is of amount "x".

According to the problem, Ivy received two paychecks and withdrew a total of $1,876.23 from her account. Therefore, we can set up the following equation:

2x - 1,876.23 = 1,692.45

Solving for x, we can simplify the equation as follows:

2x = 1,692.45 + 1,876.23

2x = 3,568.68

x = 3,568.68 / 2

x ≈ 1,784.34

Therefore, each of Ivy's paychecks is approximately $1,784.34.

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The point (16, -99) is not a perfect fit in the linear model, and the slope-intercept equation for the remaining four data points (-8, 9), (-6, -9), (-2, -18), and (8, -63) is y = (-15/2)x + 3; the y-intercept (3) represents the net approval rating for the president when there is no change in the Dow Jones, and the slope (-15/2) indicates that for every 1-point increase in the Dow Jones, the net approval rating is expected to decrease by 7.5 percentage points.

To determine which point is not a perfect fit in the linear model, we need to compute the slopes for each pair of consecutive data points.

The slope of a linear model represents the rate of change between the two variables.

Using the given data points:

Points: -8, -6, -2, 8, 16

Percentage Points: 9, -9, -18, -63, -99

Let's compute the slopes:

Slope between (-8, 9) and (-6, -9):

slope = (change in percentage points) / (change in points)

slope = (-9 - 9) / (-6 - (-8))

slope = -18 / 2

slope = -9

Slope between (-6, -9) and (-2, -18):

slope = (-18 - (-9)) / (-2 - (-6))

slope = -9 / 4.0

slope = -2.25

Slope between (-2, -18) and (8, -63):

slope = (-63 - (-18)) / (8 - (-2))

slope = -45 / 10

slope = -4.5

Slope between (8, -63) and (16, -99):

slope = (-99 - (-63)) / (16 - 8)

slope = -36 / 8

slope = -4.5

The slopes for the first three pairs of points (-9, -2.25, -4.5) match, indicating a consistent linear relationship.

However, the slope between the last two points is -4.5, not -4.25 like the others.

Therefore, the point (16, -99) is not a perfect fit.

Removing the point (16, -99), we have four remaining data points:

(-8, 9), (-6, -9), (-2, -18), and (8, -63).

To find the slope-intercept equation for the linear model that passes through these four points, we can use the formula:

y = mx + b

Using the slope formula with two of the remaining points:

-9 = m(-6) + b

-18 = m(-2) + b

Solving these two equations simultaneously, we find:

m = -9/4

b = 9/2

So the slope-intercept equation for the linear model is:

y = (-9/4)x + 9/2

The practical meaning of the y-intercept (9/2) is that when the previous day's change in the Dow Jones is 0 points, the net approval rating for the president of the United States is expected to be 9/2 percentage points, or 4.5 percentage points.

The practical meaning of the slope (-9/4) is that for every 1-point increase in the previous day's change in the Dow Jones, the net approval rating for the president of the United States is expected to decrease by 9/4 percentage points, or 2.25 percentage points.

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The graph of function g will differ from the graph of function f by (b) The graph of function g is the graph of function f shifted 4 units to the left.

The definition of the function f(x) is given as

f(x) = 10x

The definition of the function g(x) is given as

g(x) = f(x + 4)

The above means that the function f(x) is translated to get the function g(x)

As a general rule, we have:

g(x) = f(x + h) ⇒ translation to the left by h units

This means that

g(x) = f(x + 4) ⇒ translation to the left by 4 units

Hence, the graph of function g will differ from the graph of function f by (b) The graph of function g is the graph of function f shifted 4 units to the left.

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Answer:

Step-by-step explanation:

Choice A, B, D, F

Hope that helps!

The answer  is that there are 165 ways to distribute eight identical bottles of water to three friends.

We can use the formula for distributing identical objects to distinct groups, which is (n+r-1) choose (r-1), where n is the number of objects and r is the number of groups. In this case, n=8 and r=3.

So the formula becomes (8+3-1) choose (3-1), which simplifies to 10 choose 2. Using the combination formula, 10 choose 2 equals 45. However, this only accounts for cases where all three friends receive at least one bottle of water.

To account for cases where some friends may receive no water, we need to add the number of ways where two friends receive water and one friend receives no water, and the number of ways where one friend receives water and two friends receive no water.

There are three ways to choose which friend receives no water, and then we need to distribute the remaining eight bottles of water among the remaining two friends. Using the formula from earlier, this gives us (8+2-1) choose (2-1) = 9.

So for the case where two friends receive water and one friend receives no water, there are 3 * 9 = 27 ways. Similarly, for the case where one friend receives water and two friends receive no water, there are 3 * 9 = 27 ways.

Adding these cases to the initial case where all three friends receive at least one bottle of water, we get a total of 45 + 27 + 27 = 99 ways. However, we still need to account for cases where all eight bottles of water go to a single friend, which is just 3 ways.

So the final answer is 99 + 3 = 102 ways to distribute eight identical bottles of water to three friends, where some friends may receive no water.

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Answer:

A and D

Step-by-step explanation:

Answer:

$12.50

Step-by-step explanation:

Look at the graph down below \/

U can also mark where the pounds is so right at 25 pounds it would be about $12~

Answer:

x=65

Step-by-step explanation:

since its 65 on one side, its going to be 65 on the other. they are congurent

Answer: Let us assume that the number of months after which

the gym memberships will cost the same = x

Then

15 + 10x = 40 + 4x

10x - 4x = 40 - 15

6x = 25

x = 25/6

 = 4 1/6

So the membership fee of both the gyms will become same after 4 1/6 months. You can also consider that as after 5 months the membership fees of both the gyms will become same. I hope the procedure is not very complicated for you to understand.

Step-by-step explanation: Hope this helps!!

The standard deviation of the first sample is 3.5774.6.6233 is the standard deviation of the second sample.Both distributions are normal.

We need to find the F-test statistic to test the claim that the population variances are equal.The formula for the F-test statistic is:F-test statistic = (S₁² / S₂²)where, S₁ is the sample variance of sample 1S₂ is the sample variance of sample 2Now, we need to find the sample variance of each sample using the given standard deviation values.Sample Variance formula is:S² = σ² where,σ = Standard deviation

S₁² = 3.5774²S₁² = 12.8086S₂² = 6.6233²S₂² = 43.9747

Now, we have the values of sample variance of each sample.

S₁² = 12.8086S₂² = 43.9747The F-test statistic is:F-test statistic = (S₁² / S₂²)F-test statistic = (12.8086 / 43.9747)F-test statistic = 0.2910

Hence, the F-test statistic to test the claim that the population variances are equal is 0.2910 (rounded off to four decimal places).

Therefore,  the given problem is as follows:Given information:The standard deviation of the first sample is 3.5774.6.6233 is the standard deviation of the second sample.Both distributions are normal.We need to find the F-test statistic to test the claim that the population variances are equal.The formula for the F-test statistic is:F-test statistic = (S₁² / S₂²)where, S₁ is the sample variance of sample 1S₂ is the sample variance of sample 2Now, we need to find the sample variance of each sample using the given standard deviation values.Sample Variance formula is:S² = σ² where,σ = Standard deviation

S₁² = 3.5774²S₁² = 12.8086S₂² = 6.6233²S₂² = 43.9747Now, we have the values of sample variance of each sample.

S₁² = 12.8086S₂² = 43.9747The F-test statistic is:F-test statistic = (S₁² / S₂²)F-test statistic = (12.8086 / 43.9747)F-test statistic = 0.2910

Hence, the F-test statistic to test the claim that the population variances are equal is 0.2910 (rounded off to four decimal places).

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Answer:

The circle has a center at (5.-1) and radius of 2 units.

Step-by-step explanation:

The circle has a center at (-5, 1) and radius of 2 units. Therefore, option A is the correct answer.

The equation of circle provides an algebraic way to describe a circle, given the center and the length of the radius of a circle. The equation of a circle is different from the formulas that are used to calculate the area or the circumference of a circle.

The standard equation of a circle with center at (x₁, y₁) and radius r is (x-x₁)²+(y-y₁)²=r²

Given that, equation of a circle is x²+10x+y²-2y+22=0.

Here, x²+10x+y²-2y=-22

Add 25 on both the sides of an equation, we get

x²+10x+y²-2y+25=-22+25

x²+10x+25+y²-2y=3

(x+5)²+y²-2y=3

Add 1 on both the sides of an equation, we get

(x+5)²+y²-2y+1=3+1

(x+5)²+(y-1)²=4

(x+5)²+(y-1)²=2²

So, center is (-5, 1) and the radius is 2.

Therefore, option A is the correct answer.

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No, the F-test statistic cannot be less than 1 when it represents the larger of two sample variances.

The F-distribution is always a positive distribution with a range of values greater than zero. The F-test value is always greater than or equal to 0, but it is not always less than or equal to 1.

The numerator, representing the bigger sample variance, is always greater than or equal to the denominator, representing the smaller sample variance. Consequently, the F-ratio, which is the ratio of the larger to the smaller variance, is always greater than or equal to 1. Thus, an F-test statistic that is less than 1 is mathematically incorrect.

Therefore, an F-test statistic is always a positive number that is greater than or equal to zero and greater than or equal to 1. This is because the numerator of an F-distribution is always greater than or equal to the denominator.

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Answer:

5.5

Step-by-step explanation:

that is the answer....